Mounjaro vs Zepbound: Which Is Better in 2026?
Comparing Mounjaro and Zepbound side by side — weight loss results, side effects, cost, dosing, and who should choose each.
| Category | Mounjaro | Zepbound |
|---|---|---|
| Active Ingredient | Tirzepatide | Tirzepatide |
| Mechanism | Dual GIP/GLP-1 receptor agonist | Dual GIP/GLP-1 receptor agonist |
| FDA Approved For | Type 2 diabetes | Chronic weight management |
| Administration | Once weekly injection | Once weekly injection |
| Starting Dose | 2.5mg weekly | 2.5mg weekly |
| Maximum Dose | 15mg weekly | 15mg weekly |
| Dose Steps | 2.5 → 5 → 7.5 → 10 → 12.5 → 15mg | 2.5 → 5 → 7.5 → 10 → 12.5 → 15mg |
| Average Weight Loss | ~20-25% of body weight | ~22-26% of body weight |
| A1C Reduction | ~2.0-2.4% (primary endpoint) | Not primary endpoint |
| FDA Approval Year | 2022 ✓ | 2023 |
| Monthly Cost (US, no insurance) | ~$1,000-1,100 | ~$1,000-1,100 |
| Clinical Trial | SURPASS series | SURMOUNT series |
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Enzo's Tip
Plot twist — they're the same cat in different outfits! Mounjaro wears the diabetes hat, Zepbound rocks the weight loss look. Same tirzepatide, same doses, same dual-action power. The real difference is on your insurance card, not in the medication. Enzo tracks both identically because, well, they ARE identical!
Choose Mounjaro if you...
- • Have insurance that covers it
- • Want an established track record
- • Prefer a well-known medication
Choose Zepbound if you...
- • Want maximum weight loss potential
- • Have tried other GLP-1s without success
- • Your doctor recommends it
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Medical Disclaimer: Enzo is a tracking companion, not a doctor. Always consult your healthcare provider before starting, stopping, or changing any medication. The information on this page is for educational purposes only and should not be considered medical advice. Individual results may vary.